Global Patent Index - EP 1484927 A3

EP 1484927 A3 20041215 - Method and apparatus for decoding compressed and encoded digital images

Title (en)

Method and apparatus for decoding compressed and encoded digital images

Title (de)

Verfahren und Vorrichtung zur Dekodierung komprimierter und kodierter digitaler Bilder

Title (fr)

Méthode et dispositif de décodage d'images numériques codées et comprimées

Publication

EP 1484927 A3 20041215 (EN)

Application

EP 04011733 A 20040518

Priority

IT MI20031128 A 20030605

Abstract (en)

[origin: EP1484927A2] Method (ImgDec) for decoding-decompressing a compressed-encoded digital data sequence (BitStream) relating to at least one initial digital image (Imgn) comprising the steps of: receiving (Rx_Parse) the digital data sequence (BitStream) comprising compressed-encoded data groups separated from one another by at least one restart marker and each one including a respective plurality of encoded data structures, calculating (RM_Detect) a representative value of the number of encoded data structures comprised between a first restart marker (RM1n) and a subsequent second restart marker signalling, respectively, the start of a first data group (VP1n) to be decoded and the start of a second data group (VP2n), extracting (MB_Extract) from the first data group the encoded data structures; detecting (MB_Check) the presence of at least one error, if the number of the encoded data structures extracted is different from the calculated value. <IMAGE>

IPC 1-7

H04N 7/64; H04N 7/50

IPC 8 full level

H04N 19/89 (2014.01)

CPC (source: EP US)

H04N 19/61 (2014.11 - EP US); H04N 19/68 (2014.11 - EP US); H04N 19/69 (2014.11 - EP US); H04N 19/895 (2014.11 - EP US)

Citation (search report)

  • [A] EP 0707425 A2 19960417 - OKI ELECTRIC IND CO LTD [JP]
  • [XA] LAM W-M ET AL: "Self-synchronizing variable-length codes for image transmission", DIGITAL SIGNAL PROCESSING 2, ESTIMATION, VLSI. SAN FRANCISCO, MAR. 23, vol. VOL. 5 CONF. 17, 23 March 1992 (1992-03-23), pages 477 - 480, XP010058907, ISBN: 0-7803-0532-9
  • [XA] BRAILEAN J: "WIRELESS MULTIMEDIA UTILIZING MPEG-4 ERROR RESILIENT TOOLS", WCNC. IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE, XX, XX, vol. 1, 21 September 1999 (1999-09-21), pages 104 - 108, XP000956235
  • [A] ARNOLD J F ET AL: "Error resilience in the MPEG-2 video coding standard for cell based networks - A review - Image Communication", SIGNAL PROCESSING. IMAGE COMMUNICATION, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 14, no. 6-8, May 1999 (1999-05-01), pages 607 - 633, XP004165399, ISSN: 0923-5965
  • [A] GIROD B ET AL: "FEEDBACK-BASED ERROR CONTROL FOR MOBILE VIDEO TRANSMISSION", PROCEEDINGS OF THE IEEE, IEEE. NEW YORK, US, vol. 87, no. 10, October 1999 (1999-10-01), pages 1707 - 1723, XP000927243, ISSN: 0018-9219

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1484927 A2 20041208; EP 1484927 A3 20041215; EP 1484927 B1 20190227; IT MI20031128 A0 20030605; IT MI20031128 A1 20041206; US 2004258151 A1 20041223; US 7945103 B2 20110517

DOCDB simple family (application)

EP 04011733 A 20040518; IT MI20031128 A 20030605; US 86357904 A 20040607